Facebook iOS SDK未调用完成处理程序 [英] Facebook iOS SDK Not Calling Completion Handler
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问题描述
问题:
使用FB SDK和方法openActiveSessionWithReadPermissions，当从Facebook Web或Facebook应用程序重新打开该应用程序时，似乎未调用完成处理程序，并且得到以下错误输出:
Using the FB SDK and the method openActiveSessionWithReadPermissions, the completion handler doesn't appear to get called when the app is reopened from Facebook web or Facebook app and I get this error output:
FBSDKLog:FBSession 无效从FBSessionStateCreated转换为FBSessionStateClosed FBSDKLog:FBSession从FBSessionStateCreated过渡到FBSessionStateCreatedOpening
FBSDKLog: FBSession INVALID transition from FBSessionStateCreated to FBSessionStateClosed FBSDKLog: FBSession transition from FBSessionStateCreated to FBSessionStateCreatedOpening
上下文
- 使用Facebook SDK 3.2.1
- 该应用程序是为iOS 5.0+构建的
- 使用xCode 4.6.1
- 在模拟器iOS 5.1上进行测试
- 在运行iOS 6.1.2的iPhone 4S上进行测试(未使用6.0社交框架，因为要测试5.0+版本的实现)
- 更新最初是为iOS 3.0构建的应用程序，并使用旧版本的sharekit，但现在已针对ARC和共享工具包实现进行了更新，我相信所有评论都已被注释掉-希望该问题与以下版本不冲突:旧的共享工具包功能，无法在代码中找到任何内容
已采取的解决步骤
在整个堆栈溢出中进行搜索，发现提到了类似的问题，但没有解决方案
Searched throughout Stack Overflow, found similar issues mentioned but not a solution
- ios6 facebook集成登录始终为FBSessionStateClosedLoginFailed永远不会打开(我已经安装了bool:application)
- Facebook iOS SDK 3.0-会话未打开
- Facebook SDK 3.1-验证访问令牌时出错
- 在FB设置面板中具有正确的应用程序包
- 具有正确的Facebook应用ID是plist
- 已打开FBSettings setLoggingBehavior的FB日志记录
- ios6 facebook integration login always FBSessionStateClosedLoginFailed never opens (i already have bool:application implemented)
- Facebook iOS SDK 3.0 - session not open
- Facebook SDK 3.1 - Error validating access token
- Have the correct app bundle in the FB settings panel
- Have the correct Facebook app ID is the plist
- Have FB logging turned on FBSettings setLoggingBehavior
详细信息:
这些是我在应用程序中实现Facebook连接的步骤.
These are the steps I took to implement Facebook connectivity within the app.
- 我采取的第一步是浏览以下Facebook教程: https ://developers.facebook.com/docs/tutorials/ios-sdk-tutorial/.我得到了第一部分，身份验证部分按预期方式工作(按照教程的指导，我构建了一个单独的应用程序.)
- 然后，我在要更新的应用程序中的教程中执行了相同的步骤，但这没有用
- 然后，我按照 https:上的说明进行操作: //developers.facebook.com/docs/howtos/login-with-facebook-using-ios-sdk/(与本教程非常相似)
- 我又遇到了问题
- 然后花了很多时间寻找解决方案，找不到一个
- The first step I took was walking through the Facebook tutorial at: https://developers.facebook.com/docs/tutorials/ios-sdk-tutorial/. I got the first part, the authentication part working as expected (I built a separate app as instructed by the tutorial.)
- I then took the same steps within the tutorial in the app I'm updating, this did not work
- I then followed the instructions on https://developers.facebook.com/docs/howtos/login-with-facebook-using-ios-sdk/ (which are very similar to the tutorial)
- Again I ran into issues
- Then spent a lot of time searching for solution, could not find one
代码中的高级步骤:
- 我在AppDelegate中设置了FB方法
- 在特定的视图控制器中，我有一个按钮，该按钮调用openSessionWithAllowLoginUI方法以启动登录过程
代码
AppDelegate.m
- (void)applicationDidFinishLaunching:(UIApplication *)application
{
// set up facebook logging
[FBSettings setLoggingBehavior:[NSSet setWithObjects:FBLoggingBehaviorFBRequests, FBLoggingBehaviorFBURLConnections, FBLoggingBehaviorAccessTokens, FBLoggingBehaviorSessionStateTransitions, nil]];
// Call the ACAccountStore method renewCredentialsForAccount, which will update the OS's understanding of the token state
ACAccountStore *accountStore;
ACAccountType *accountTypeFB;
if ((accountStore = [[ACAccountStore alloc] init]) &&
(accountTypeFB = [accountStore accountTypeWithAccountTypeIdentifier:ACAccountTypeIdentifierFacebook] ) ){
NSArray *fbAccounts = [accountStore accountsWithAccountType:accountTypeFB];
id account;
if (fbAccounts && [fbAccounts count] > 0 &&
(account = [fbAccounts objectAtIndex:0])){
[accountStore renewCredentialsForAccount:account completion:^(ACAccountCredentialRenewResult renewResult, NSError *error) {
//we don't actually need to inspect renewResult or error.
if (error){
}
}];
}
}
- (void)applicationDidBecomeActive:(UIApplication *)application
{
// We need to properly handle activation of the application with regards to Facebook Login
// (e.g., returning from iOS 6.0 Login Dialog or from fast app switching).
NSLog(@"Calling app did become active");
[FBSession.activeSession handleDidBecomeActive];
}
/*
* Callback for session changes.
*/
- (void)sessionStateChanged:(FBSession *)session
state:(FBSessionState) state
error:(NSError *)error
{
NSLog(@"Session State Changed");
switch (state) {
case FBSessionStateOpen:
if (!error) {
// We have a valid session
NSLog(@"User session found");
}
break;
case FBSessionStateClosed:
case FBSessionStateClosedLoginFailed:
[FBSession.activeSession closeAndClearTokenInformation];
break;
default:
break;
}
[[NSNotificationCenter defaultCenter]
postNotificationName:FBSessionStateChangedNotification
object:session];
if (error) {
UIAlertView *alertView = [[UIAlertView alloc]
initWithTitle:@"Error"
message:error.localizedDescription
delegate:nil
cancelButtonTitle:@"OK"
otherButtonTitles:nil];
[alertView show];
}
}
/*
* Opens a Facebook session and optionally shows the login UX.
*/
- (BOOL)openSessionWithAllowLoginUI:(BOOL)allowLoginUI {
NSLog(@"Openning session with Facebook");
return [FBSession openActiveSessionWithReadPermissions:nil
allowLoginUI:allowLoginUI
completionHandler:^(FBSession *session,
FBSessionState state,
NSError *error) {
[self sessionStateChanged:session
state:state
error:error];
}];
}
/*
* If we have a valid session at the time of openURL call, we handle
* Facebook transitions by passing the url argument to handleOpenURL
*/
- (BOOL)application:(UIApplication *)application
openURL:(NSURL *)url
sourceApplication:(NSString *)sourceApplication
annotation:(id)annotation {
// attempt to extract a token from the url
NSLog(@"Calling open URL");
return [FBSession.activeSession handleOpenURL:url];
}
- (void) closeSession {
NSLog(@"Clossing Facebook Sessions");
[FBSession.activeSession closeAndClearTokenInformation];
}
- (BOOL)application:(UIApplication *)application handleOpenURL:(NSURL *)url
{
NSLog(@"handleOpenUrl Called");
return [FBSession.activeSession handleOpenURL:url];
}
带有按钮的View Controller
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view from its nib.
// Register for Facebook change notification
[[NSNotificationCenter defaultCenter]
addObserver:self
selector:@selector(sessionStateChanged:)
name:FBSessionStateChangedNotification
object:nil];
}
- (IBAction)login:(id)sender {
ATIAppDelegate *myAppDelegate = (ATIAppDelegate *)[[UIApplication sharedApplication]delegate];
[myAppDelegate openSessionWithAllowLoginUI:YES];
}
我认为问题可能是什么?
- 令牌似乎有些东西了?
- 还是通知中心?
- 请注意，在测试过程中，我一直在撤消对Facebook应用程序的访问，然后尝试再次登录该应用程序，我发现这些问题导致了其他用户的问题
- It seems like it may be something with the tokens?
- Or maybe the notification center?
- Note that during testing I've been going and revoking access of the Facebook app to my account and then trying to login again to the app, I see these has caused issues with other users
推荐答案
好吧，我知道了-问题与FB本身无关，该应用程序(我正在更新其他人的代码)在其中进行了设置.plist-应用程序不在后台运行"设置为true.
Okay I figured it out - the issue was nothing to do with FB itself, the app (I'm working on updating someone else's code) had a setting in the .plist - 'Application does not run in background' set to true.
意味着一旦该应用程序从Facebook应用程序或Facebook移动网站重新启动，它就不准备进行下一步.
Meaning that once the app was relaunched from the Facebook app or Facebook mobile site it wasn't prepared to handle the next step.
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